Typewriting machine



C. W.- WALKER ET AL.

TYPEWRITING MACHINEV Filed April 8, 1921 42 cocoa o a 0 0 0 o o o D O u o o 0 O O O mmm 16 Sheets-Sheet 1 /m/EA/ rows.

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TYPEWRITING. MACHINE Filed April 8. 1921 16 Sheets-Sheet 2 /A/rE/VTOHS Dm. 25, i923.

Filed l April 8 1921 16 Sheets-Sheet 5 A TTORNE Y.

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TYPEWRITING MACHINE Fned April 8, 1921 BY fm@ A TTORNE Y.

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rrrnwnrme rancnrnn Application filed April 8, 1921.

To all whom it may concern.'

Be it known that we, CHARLES W. ".FALKER and Arno C. FVALKEP., citizens of the United States, residing, respectively, at Stratford and Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to typewriting machines. We have a number of elemental motives in view among them being the provision of a machine which is effective in action and by which visibility and silence are assured and by which errors on striking on the part of an operator may be very readily corrected before printing. rlhere are a large number of other fundamental motives in view, which with the foregoing will be set forth at length in the following description of those forms of embodiment of the invention which are merely several of a large number that we have selected for iliustration in the drawings accompanying and forming part of the present specication. rlhis disclosure will enable those skilled inthe art to practice the invention. i'bviously we are in no sense restricted thereto as we may depart therefrom in many respects within the scope of the invention defined by the claims following said description. As a matter of fact the invention is broad and fundamental in character and involves we believe, Certain radically new features and as observed we have, in order to comply with .the statutes, shown merely several of the many ways in which the invention can be carried into practical effect.

Referring to the drawings:

Figure 1 is a top plan view of a typewriting-machine involving` our invention, the central portion being broken out and the lateral parts brought together, a part of the keyboard being removed.

Fig. 2 is sectional side elevation ofthe machine, the section being taken from front to rear.

3 is a top plan view of the forward portion of said machine.

Fig. 4 is a bottom plan view with certain portions in horizontal section.

sei-iai NQ. 459,604.

Fig. 5 is a side elevation partly in section, of the front portion of the machine.

Fig. 6 is a practically similar view'illustrating most of the parts shown in Fig.V 5 but illustrating also others, for instance'the escapement.

Fig. 7 is a front elevation of what appears in Fig. 6.

Fig. 8 is a side elevation of practically the complete machine with portions broken away and in section and with the frame removed.

Fig. 9 is a top plan view with the central portion broken away and the lateral parts brought together, of the platen mechanism and certain adjunctive elements.

Fig. 10 is a plan view of type carriers and certain associated parts.

Fig. 11 is a side elevation of the platen mechanism and associated elements for moving the platen.

F ig. 12 isv a side elevation of means by which the type selector may be moved, and certain associated parts.

Fig. 13 is a perspective view of a group of type carriers and justifying means.

Fig. 14 is a side elevation'of the platen and certain associated parts for moving the type carriers to their initial position, the full lines showing normal positions and the dotted lines showing moved positions.

Fig. 15 is a top plan view of the structure appearing in Fig. 14.

Figs.'16 and 1T are views somewhat similar to Fig. 14 showing arrangements for rolling the projected vtype back into the carriers.

Fig. 18 is a rear view of the mechanism shown in Fig. 16.

Fig. 19 is a perspective view of a type carrier, selecting mechanism, and key lever.

Fig. 2O is a side elevation of platen mechanism and certain coacting parts by which the platen maybe moved forward to effect an impression.

Fig. 21 is a detail view in side elevation of a modification of Fig. 20.

Fig. 22 isa side Yelevation of ya type carrier, selecting and operating mechanisms showing shift key mechanism.

Fig. 23 is a transverse section on the Qline 23d-28 of Fig. 22 showing the release of type carriers.

selector portion of the selector, and the alining mechanism illustrating also bufling means which does not appear in other views.

Fig. is a similar view ofthe same parts and showing the alining mechanism as operated to aline the type by transverse pressures. Y 'Y Fig. 31 is a cross section through the upper portion of a yoke representing the buiiing device thereon.

Fig. 32 is a rear elevation of the upper portion of the yoke shown in the preceding figure with the buffing device thereon.

Fig. 33 is a bottoni plan view of the structure shown in said Fig. 32.

Fig. 34 is a detail in sectional elevation ofl a portion ofv the yoke and alining inembei' carried thereby.

Fig. is an elevation as seen from the left in Fig. 34, practicalljJ the whole yoke er:-

`conditions in a satisfactory manner.

cept the cross-bail being shown.

Like characters referto like parts throughout the severalviews which are on diderent scales'.

As we have already observed the iiivention according to our view, being of fundamentally new character, it is natural to be inferred that the framework by which kthe various opera-tive parts are sustained for the necessary action, may be of any suitable character. The same observation of course applies to other Vparts of the machine whether they be fixed or movable. The framework shown, is denoted by 2 and it appears practically in full in Fig. 1 and is partly shown in other views.

rlhe platen mechanism is illustrated in 4this Fig. 1 and appears also in other views for instance Figs. 2, 8, 9, 11, 14, 15, 16, 17, .20 and 21. As will be clear Vthe platen Amechanism may be of any desirable nature although a cylindrical roll as3 meets our lt 0'enerally comprises a core which we find for illustration can be made of metal such as aluminum or even steel and it is usually hollow and can be'tlierefore formed from tubing. We shouldnote at this point that oneof'the primeattributespresent in our machine, is the noiseless action thereof and we finchthat by our construction we can make this platen or roller 3 of metal with.-

out ithe creation of any unnecessary noise or jar. Said platen or roll unlike the ordinary typewriting machine platen or core with which we are at present familiar, has no movement in the direction of its longitudinal axis it being not sustained ,byV the familiall travelling carriage. words it is desiiably immovable in the direc.- tioiiof its longitudinal axis whichV inthe present case is its axis of rotation, the platen or roll beingturnable for paper feeding the imprint for instance ofa line or part of a line or anything else necessitating paper feeding. We might observe at this point although the platen or roller is ii'ninovable in the direction of its longitudiiial axis which in the present instance is the aiis of rotation thereof, it does have, preferably a lateral motion although this may not be necessary in all cases. However,

.it is desirable. Gbviouslythe lateral motion to which we have referred, of the platen, cylinder or roll, is transverse to the axes of the platen. l j Y rlliere is a platen carrier and desirably as will be understood it is movably mounted. Although the platen carrier niay be of any convenient character, that shown for the purpose is denotedin a general way by 4 lt appears in Figs. 1, 2, 8,79, 11, 14, 15, 16 17 and 20. hasa rocking or oscillatory motion and for this purpose it may beV loosely supported by a shaft `as 5q extending between ythe sides of the framework 2, generally below the horizontal center line and slightly back of the vertical center line thereof. The said platen-carrier involves as represented two sides as 6 practically of angular orelbow form, the bodies or main portions of the sides being somewhat longer than the lower branches thereof which lit around the supporting shaft 5 desirably near Vthe ends thereof. The bodies 'or'niain portions of the sides are provided at their upper ends, with heads or cross piecesy 7k as shown for instance in Figs. 11 and 21, these heads or cross ln other As shown the platen carrier and backwardly therefrom in Yfact and be-V A ing connected at their rear ends by the strip 8 (Figs. 19 and 15), the connecting strip .8 and the two heads 7 being practically in the form of a yoke or U. The sides of this yoke, made up of this strip and the heads or-,cross pieces 7,-are Vgenerally Yin one piece although this is not a matter of consequence, andthe heads or cross pieces .7 of the yoke may if desired be yintegral with the sides 6 of the platen. carrier. las shown the platen or i'oll 3 has projecting outwardly freni its flatends the gudgeons or journals 9 and which may if desired constitute Athe terminal portions of ,aV shaft extending entirely through Y the platen vor cylinder. I Asshown the heads or cross pieces 7 constituting a part of the platen carrier, have holes to rotatively recerc these g rdgcoiis or journals 9 thus providzny a o etieting the rotation of tva v t' VJ a a the p aten or line feeding, the impression being brought about ordi arily by the .movement bodily of the platen.

There is an actuator for the platen, in the construction shown, by which the platen may be moved to secure an impression and this actuator may be of any suit` ble natur l/Vhat is known in the typewritmg art as a key lever such as that denoted in a general Way by 10,ansu-ers our requirements. rllhis actuator is obviously in correla-.tionniith the keyboard of the or linger-striking portion may be and as shown is at the upper limit of the keyboard Which after the fashion, slopes downwardly and rearwardly. rthis operative portion of the platen actuator might be in any other suitable location. The actuator' shown for the purpose is denoted in a general Way by 10. 1t appears for instance in Figs. 1? 2, 3, and 8 and involves as illustrated, the sides 11 supported for rocking motion in proximity to their rear endsj by the trzfinsverse shaft and connected at their for-Ward ends by the cross piece 12 which is the lingeroperating portion of the actuator 10, and which as represented extends uninterruptedly across the front of the machine as best shown in Fig. 1. 1t also appears in other views for instance Fig. 20. As illustrated this actuator or platen-moving hey lever 10 is not positively connected With the platencarrier 4 although it does operate it. As shown the sides 11 of said actuator 10 have extending rearwardly from the shaft 5 the etensions 13, as best shown in Fig. 20, these extensions hugging the sides 6 of the platen carrier in proximity to the airis of motion thereof or practically at the elboivs of the sides 6 of the platen carrier. rThe full lines in Fig. 2() for instance shoiv the platen 3, its carrier 4iaud the actuator 1() in a state of rest or bacl. 1t will be assumed that type has been set up and that it is desired to obtain an impression from said type. ln the construction shown the procedure will be as follows.

The operator of the machine will strike the cross bar 12 of the actuator 10 and naturally depress it as shown by dotted lines in ig. 20. rihis causes the extensions 13 by operating against tl e sides 6 of the platen carrier, to swing said sides forwardly as also shown by dotted lines in sail Fig. 20., the platen naturally moving with its carrier so that if paper be on the platen the paper Will receive the impression of the composed type Whether there be one or more. lt'vvil'l be understood that when the Apressure of the linger is taken from the cross bar 12 the actuator 10 drops of its oivn Tvieght or automatically, and the effect of the actuator being taken. from the platen carrier 4 the plat-en,

machine, and its operative cai ier can automatically assume its initialV position. A

1t is desirable that the platen or cylinder' 3% be given a rolling motion during its travel from its retracted `position to its advance o r printing position and the means by which this condition is brought about may vary decidedly although those shown meet the conditions. For this purpose We have represented linlrs 1e vil ch appear in Figs. 1S, and 2() for instance. The upper ends of the linlrs are shown as jointed as by pivots with the cross heads 7 near the forward e 'la thereof, the links being jointed as by pivot" 16, to the inner faces of the sides of framing 2, the linlts 11i Jeing extended below the pivots 16 for a reason We Will herein after explain. By the linl: construction i vvill be clear that as the platen 3 is advanced in the manner hereinbefore described,

it with the paper upon it7 is given a rolling motion so that the paper instead of directly striking the type or abruptly hitting it3 rolls on the type. Of course on the backward movement ofthe platen 3 or frein the dotted line position in Fig. 2O to the full line position thereof7 the platen is naturally given a reverse rolling motion.

The line-feeding mechanism does not. in itself concern any part of our invention. .lt may be of any suitable character although We deem it proper to briefly describe that shown for the purpose. Bach of the platen or roll 3 is a pressure or feed roll 17 as shown for instance in Fig. 2, the ournals at the end portions of the shaft 18 extending into the hangers 19 sustained by the heads or cross pieces 7. The paper guide 2O is attached to the rear side of the strip 8. lllhe sheet of paper or other article to receive an impression is introduced after the `Well-linovvn fashion between the platen 3 and the pressure or feed roller 1'? and is :id-- vanced or fed foi-Warth that moved toward the front of the machine by turning said roll. The initial introduction of the paper is accomplished by hand. v@ui-ing the action of the machine for line feeding, the platen is rotated by a knob as 21 1). The knob 21 is fastened to the outer end of the platen shaft 9 and has fastened to it a .ratchet ivheel 22 with which. is associated the detent connected to the free end of the spring 2e Y and fastened at its butt to the lug or projection 25 on the strip or 8 as best shown .in 2. rlhis line-feeding niechai ,ein is quite common and therefore we have deemed it proper to give but a concise description of it.

""ovided with a hese type-carf mounted. and the suitn ble nature u* .type-carriers Whi any are denoted by 26 and they appear for instance in Figs. l, 2, 5 and 8. Each typecarrier, ant. as shown theyY are all alike, comprises a practically segmental or arcuate Sheath-like body 27. From the rear end of each sheath -or envelope-like body 2? there extends the arm or branch 28 also arcuate.

As represented the type-carriers 2i swing on the Vshaft 5 to which We have already referred, the arms 28 having holes or pertorations through Ythem to Afreely receive the shaft'and thus permit the proper oscillation of the type-carriers as they are brought'into'operative or advance positions. In Fig. V8 one of these type-carriers 26 appears in its retracted position and a similar relation is shown by full lines in F 22. `When in the vretracted positions the tree ends ot the bodies 2i' of the typecarriers 26 are separabiy or detaehably associatedrvith a support as 29 extending between the sides of the trame and which ordinarily consists ot a fixed cross-bar having detent devices or latches v30 which coact respectively With the free ends of the bodies 2? of the type-carriers to releasably hold them in their retracted positionsvuhich they are shovvn as occupying tor instance in Fig. 8. After a type has been selected tor use from the group or series on the type-carrier, the type-carrier is automaticaliy moved from its retracted position to an advancedk position., the amount of advance varying with or conforming to the particular type or character selectedv for printing. 1n Fig. il for instance vve have shown a type-carrier 26 as having been advanced not necessarily its full extent but moved away certainly r:trom its retracted, initial or primary position.

In Figs. 25 to 28 We have shown in detail the body or type-'carrying portion 27 of a type-carrier 26. This body has 'for instance depthvvise through it the slots or apertures "3l to slidingly 'receive for longitudinal Hiace bearino` a like or index character and the respective bodies 27.

the typefbeing held against laccidental lenvgitudinal movement for instance by spring tongues or fingers 33 bearing against the Shanks thereof and Which can be cut Aif desired from the stock of the respective bodies 27. rlhe spring tongues or tingers 33 eiectually prevent accidental or unintentional motion of' the type with respect to the carriers as they bear at their Jfree ends against'the Shanks or bodies of the type. The head or enlargedl ends oi the type and which directly bear the chztracters7 rest When in their down positions against Each of the bodies carries a series or groupV o1 type, the series or groups of type in the respective type-carriers being repeated. Generally and certainly in this country the characters Would be allV upper and lower case letters and numbers together' with customary punctuation'marks such as are found in the ordinary standard typeivriting machine.v

When the group or series oi the particular carrier is in the vretracted or initial .rela-tion, the heads or shoulders ot the type are in exact line longitudinally oi Aretracted position and positively advanced until desirably and at such point as further advancing movement ot the carrier is arrested by a proper stop. It willot course be understood that the carriers are advanced difterent'distances, the amount Yfollowed by any one of them during itsadvance conforming to the character which has been selectedl and the selected carriers'in the construction shown, all abut against the stop means after which they are what might be considered justitieel in order to Aobtain the most eiiicient results. j

v A stop memb'ervvhich meets our conditions is suchV a one as that denoted in' a general Way by 34 and shovvnfor instancein Figs.'

rihis stop member 34 as illus- Y tra-ted is Vpratically oft yoke or bail form, the transverse portion 35 thereof extendingY entirely across the ,machine forward and.

2, ligand 13.

slightly belowthe platen 3, and having the pendant side arms 36. rlhis stop member 34 is normally stationary yet itV may be adjusted When desired by means on the frame- Work. it Will be assumedv that 'all the type in all the carriers are in their initial positype on tions and thatthe carriers are advanced and We will describe howy they may be hereinafter. in this event the carriers Would all go to their extreme advanced positions. It however a type is advanced, then that type thus advanced would strike thestop niember 34 or more properly the transverse portion 85 thereof and this type 'would be the one that had been selected bythe operator,V

so that a number of type thus selected would term a line from which an impressionV 2, generally has a motion desirablyrbetvveen said sides Vtor the purpose of selecting'in the case of each group of type, the appropriate one ot tvvo` type always immediately 

